Bad service

Hi I have a fiber and lte account with telkom I am currently unemployed for 2 years and have struggled to pay my account. My lte is paid up to date but the Sim card is not working telkom does not want to replace it due to my other account in arrears I am paying monthly for service not being used My fiber account has been suspended in December and every month they still charging me they refuse to put a stop on my account to get the outstanding bal paid up My account is on a month to month